Not Used
Matrix column 7, row 6 · not used ·
Wiring
- Column 7
- Yellow-Violet J137-7 · Q92
- Row 6
- Red-Blue J133-7 · Q85
Location
- Not on the playfield map: not used in this machine.
- No callout on the location map
Service log
Everything you record stays on this device.
Service notes: In the lamp matrix at column 7 (driver Q92, J137-7) and row 6 (driver Q85, J133-7). One dark lamp is the bulb or its socket; a whole column or row dark is the driver transistor or the J137/J133 connector, not the bulbs. Find it in T.8 Single Lamp Test. With LEDs, a faint glow on lamps that should be off is matrix ghosting: the ghost-busting ROM for this game or non-ghosting LEDs. A4 Lamps, flashers and GI
Appendices:A4 Lamps, flashers and GIA5 Power driver boardA1 Multimeter basics